JP2002306642A - Golf club set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a golf club set capable of exhibiting the required characteristic of each count at the maximum. SOLUTION: This golf club set includes a plurality of golf clubs having a head 2 mounted at the tip end of a shaft 1 and a grip 3 mounted at the bat end, wherein the golf clubs are different in length, and as the club is decreased in length, the mass of metal powder 4 added to the bat part of the shaft is gradually increased in weight.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club set including a plurality of golf clubs having different club lengths, and more particularly, to a golf club set which maximizes the required characteristics for each count. .

[0002]

2. Description of the Related Art An iron golf club set is provided with about ten clubs from a long iron to a short iron, and has different flight distances (several meters to about 200
The configuration is such that the club length and the loft angle are variously varied so that m) is obtained. Generally, in the iron golf club set, the loft angle is reduced as the club on the long side is reduced, and by increasing the club length, the flying distance is easily obtained, while the loft angle is increased as the club on the short side is increased, and By shortening the club length, it is easier to raise the ball, and the run is reduced to emphasize the direction.

[0003] However, in the conventional golf club set, although the structure of the shaft and the like is changed between the irons, the harmony is achieved from the long iron to the short iron, but the required characteristics for each iron can be maximized. could not.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a golf club set capable of maximizing the required characteristics for each count.

[0005]

According to the present invention, there is provided a golf club set including a plurality of golf clubs having a head mounted on a tip end side of a shaft and a grip mounted on a butt end side. In a golf club set having various lengths of the golf clubs, the mass of the metal powder added to the butt portion of the shaft gradually increases as the length of the golf club decreases. It is assumed that.

As the length of the golf club is shortened, the mass of the metal powder added to the butt portion of the shaft is gradually increased, so that the golf club on the long side is relatively lightened, The golf club on the side can be easily swung and the flight distance of the ball can be maximized. Moreover, in the golf club set, as the length of the golf club becomes shorter, the center of gravity of the golf club shifts toward the grip based on a change in the mass of the metal powder. Therefore, in the golf club on the short side, it is difficult to feel the weight of the head at the time of the swing, and it is easy to swing the golf club integrally with the body, so that the hitting direction and the flight distance stability can be improved. As a result, it is possible to maximize the required characteristics for each count.

In the above golf club set, it is preferable that as the length of the golf club becomes shorter, the mass of the metal powder is gradually increased so that the difference between the iron numbers becomes gradually larger. Also, to perform mass adjustment more effectively,
The specific gravity of the metal powder is preferably 7.5 or more. Furthermore, as a guide for mass adjustment of the shaft alone, as the length of the golf club becomes shorter, the ratio of the distance from the tip end of the shaft to the center of gravity of the shaft with the metal powder added to the overall length of the shaft is gradually increased. It is preferable to make it larger.

Further, as the length of the golf club becomes shorter, the outer diameter of the tip end of the shaft is gradually increased, thereby further improving the hitting direction and flight distance stability of the golf club on the short side. be able to.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 illustrates a golf club set according to an embodiment of the present invention.
A9 (No. 3 to 9 irons), a golf club PW (pitting wedge), and a golf club SW (sand wedge). Each golf club has a configuration in which a head 2 is mounted on a tip end side of a tubular shaft 1 and a grip 3 is mounted on a butt end side.

These golf clubs A3 to A9, PW, S
W is set such that the loft angle X (°) increases and the club length decreases as the count increases. That is, the golf clubs A3 to A9, PW, and SW are set such that the greater the ball count, the shorter the hit ball flight distance.

As shown in FIG. 2, a metal powder 4 is added to a butt portion of the shaft 1 (a range from the butt end to 260 mm in the axial direction). That is, when the shaft 1 is made of fiber-reinforced resin, the metal powder 4 is added to the butt portion of the shaft 1 by mixing the metal powder into a part of the prepreg in which the reinforcing fibers are impregnated with the resin. The specific gravity of the metal powder 4 is preferably 7.5 or more. If the specific gravity of the metal powder 4 is too small, it becomes difficult to effectively adjust the mass balance of the golf club. Such a metal powder 4
Preferably, tungsten can be used.

In the golf club set, as the club length becomes shorter, the mass of the metal powder 4 added to the butt portion of the shaft 1 gradually increases.

By gradually increasing the mass of the metal powder 4 added to the butt portion of the shaft 1 as the club length becomes shorter, the golf club on the long side in the set becomes relatively lighter. It becomes easy to swing. Therefore, the flight distance of the ball can be maximized for the long side golf club. Further, as the club length becomes shorter, the center of gravity of the golf club shifts closer to the grip based on the change in the mass of the metal powder 4 on the shaft 1, so that the golf club on the short side has a better hitting direction and a stable flight distance. Performance can be improved.

In the golf club set, as the club length becomes shorter, the difference between the numbers of the metal powders 4 is gradually increased, so that the mass balance in the set can be optimized. Moreover, as the club length becomes shorter, the ratio of the distance from the tip end of the shaft 1 to the position of the center of gravity of the shaft with the metal powder 4 added to the shaft length may be gradually increased. By setting the position of the center of gravity of the shaft closer to the end of the bat as the club length becomes shorter, it is possible to more effectively improve the hitting direction and the flight distance stability of the golf club on the short side.

In the above-mentioned golf club set, the outer diameter of the tip end of the shaft 1 may be gradually increased as the club length becomes shorter. By setting the outer diameter of the tip end of the shaft 1 as described above, in the golf club on the short side, the rigidity near the tip end of the shaft 1 is increased, so that the hitting directionality and flight distance stability are further improved. Can be. Also, in the golf club on the short side, if the tip end of the shaft 1 is made thicker, there is an advantage that a sense of security can be given to the golfer by a visual effect.

In the above golf club set, the total mass of each golf club is not particularly limited, but the total mass of the shortest golf club is 400 to 500 g,
The longest golf club should have a total mass of 300 to 400 g. Setting within the above range makes it possible to provide a golf club set with further improved hitting ball directionality and flight distance stability.

In the present invention, the combination of the golf clubs constituting the golf club set is not particularly limited, and the required golf clubs can be arbitrarily combined to constitute the set. For example, in addition to the golf club shown in FIG. 1, it is possible to include an approaching wedge or the like.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a golf club set including a plurality of golf clubs, each golf club has a club length,
The loft angle, the total mass, the ratio of the distance from the tip end of the shaft to the position of the center of gravity of the shaft relative to the entire length of the shaft (referred to as the position of the center of gravity of the shaft), the outer diameter at the tip end of the shaft, the mass of the metal powder added to the butt part, The conventional set and the present invention sets 1 to 3 in which the difference between the metal powder masses and the specific gravity of the metal powder were set as shown in Tables 1 to 4 were manufactured.

With respect to these test sets, test hits were performed by five senior golfers, their flight distances were measured, and the amount of deviation of the ball from the center line was measured as an index of direction. The results were shown in Tables 1 to 4. Are also shown. The evaluation result of the flight distance was indicated by an index with the conventional set being 100. The greater the index value, the greater the flight distance. In addition, the evaluation result of the directionality was indicated by an index using the reciprocal of the measured value and the conventional set as 100. The larger the index value, the better the directionality.

[0021]

[Table 1]

[0022]

[Table 2]

[0023]

[Table 3]

[0024]

[Table 4]

As is apparent from Tables 1 to 4, the long irons of sets 1 to 3 of the present invention have a longer flight distance than the long irons of the conventional set, and the short irons of sets 1 to 3 of the present invention have a longer distance. The directionality was better than the short irons of the set.

[0026]

As described above, according to the present invention, a plurality of golf clubs having a head mounted on the tip end side of the shaft and a grip mounted on the butt end side are provided. In a variety of different golf club sets, as the length of the golf club becomes shorter,
Since the mass of the metal powder added to the butt portion of the shaft is gradually increased, the flight distance of the golf club on the long side is increased, and the hitting direction and the stability of the flight distance of the golf club on the short side are improved. Required characteristics can be maximized.

[Brief description of the drawings]

FIG. 1 is a side view showing a part of a plurality of iron golf clubs constituting a golf club set according to an embodiment of the present invention;

FIG. 2 is a sectional view showing a grip portion of a typical golf club in the golf club set of the present invention.

[Explanation of symbols]

 Reference Signs List 1 shaft 2 head 3 grip 4 metal powder A3-A9, PW, SW golf club X loft angle

Claims (5)

[Claims] 1. A golf club set comprising a plurality of golf clubs having a head mounted on a tip end side of a shaft and a grip mounted on a butt end side, wherein the golf clubs have different lengths of the golf clubs. A golf club set, wherein the mass of the metal powder added to the butt portion of the shaft gradually increases as the length of the club decreases. 2. The method according to claim 1, wherein, as the length of the golf club is reduced, the mass of the metal powder is gradually increased so that the difference between the metal counts is gradually increased.
The golf club set according to 1. 3. The golf club set according to claim 1, wherein the specific gravity of the metal powder is 7.5 or more. 4. The ratio of the distance from the tip end of the shaft to the position of the center of gravity of the shaft with the metal powder added thereto gradually increases as the length of the golf club becomes shorter. The golf club set according to any one of claims 1 to 3, wherein: 5. The golf according to claim 1, wherein the outer diameter of the tip end of the shaft gradually increases as the length of the golf club decreases. Club set.